[Aavso-photometry] GJ436b comp stars...constant over time?

[Richard Huziak]

Pedro:

Enter    GJ 436  (use a space but without a dash) into the Variable Star 
Plotter (VSP)

Check off the box that says:
[X]   Do not plot a chart, just give me a table of photometry

Then "Plot Chart"

you then get the photometry table.

It also works if you start with VSX J114211.0+264223 and strip this down 
to the coordinates:
11 42 11.0    +26 42 23
If you enter this into the coordinates of the VSP, you also will get the 
chart and photometry table.

Currently, the VSX, VSP and light curve generator do not talk to each 
other, but one day they might.

rick (HUZ)


Pedro Pastor wrote:
> Thank you Arne for your response, but I'm not able to get the information
> your refer to. I'm sure I'm doing somthing wrong, but I don't know what is
> it.
>
> >From AAVSO web site I reach to 2 different pages for GJ-436:
>
> 1) The VSP record for the object:
>
> http://www.aavso.org/vsx/index.php?view=detail.top&oid=161108
>
>
> 2) The chart:
> http://www.aavso.org/cgi-bin/vsp.pl?action=render&name=GJ+436&ra=&dec=&chart
> title=&chartcomment=&aavsoscale=Choose&fov=30&resolution=100&maglimit=&north
> =down&east=right&Submit=Plot+Chart
>
> In no case I could find the BVRI photometry. Where is the link for that?
>
> Another question. Is it possible to navigate to the corresponding Chart or
> Light-Curve from the VSP page for a specific object? I could get to it for
> this object.
>
> Thank you very much in advance.
>
> Pedro
>
>
> -----Mensaje original-----
> De: ahenden at gmail.com [mailto:ahenden at gmail.com] En nombre de Arne Henden
> Enviado el: sábado, 05 de abril de 2008 13:45
> Para: Pedro Pastor
> CC: aavso-photometry at mira.aavso.org
> Asunto: Re: [Aavso-photometry] GJ436b comp stars...constant over time?
>
> Not quite sure what you mean, Pedro.  The VSP marked comparison stars have
> BVRI photometry, as given in the accompanying photometry table.
> Arne
>
> On Fri, Apr 4, 2008 at 2:00 PM, Pedro Pastor <pps at dlsi.ua.es> wrote:
>   
>> No Tom, I haven't found any noticeable variation for the 106 and 107 
>> stars  during the night-session.
>>
>>  On the other hand, I'm using the R filter. Could anybody provide me 
>> with the  respective R magnitudes for some comparation stars?
>>
>>  Thank you very much.
>>
>>  Pedro
>>
>>  -----Mensaje original-----
>>  De: aavso-photometry-bounces at mira.aavso.org
>>  [mailto:aavso-photometry-bounces at mira.aavso.org] En nombre de Tom 
>> Krajci  Enviado el: viernes, 04 de abril de 2008 15:52
>>  Para: aavso-photometry at mira.aavso.org
>>  Asunto: [Aavso-photometry] GJ436b comp stars...constant over time?
>>
>>
>>
>>  A bunch of folks have been working on GJ436b for some time.  Two comp 
>> stars  are most often used:  HIP 57103 (3 - 4 arcminutes NE) and GSC
>>  1984-1884 (3 - 4 arcmin N).
>>
>>  Have these comps shown any variability over time?
>>
>>  Thanks in advance.
>>
>>  -------------------------------------------
>>  Tom Krajci
>>  Cloudcroft, New Mexico
>>  http://picasaweb.google.com/tom.krajci
>>
>>  http://overton2.tamu.edu/aset/krajci/
>>
>>  Center for Backyard Astrophysics (CBA)  http://cbastro.org/ CBA New 
>> Mexico
>>
>>  American Association of Variable Star  Observers (AAVSO): KTC 
>> http://www.aavso.org/
>>  -------------------------------------------
>>
>>  _______________________________________________
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Richard Huziak
Manufacturing Engineering
SED Systems
Saskatoon, SK, Canada
tel. (306) 933-1676
<huziak at SEDSystems.ca>
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